Is this joke a fancy way of saying vegan?

[boby]

My brother is a lacto-ovo-pesco-pollo-carne-vegetarian.

 

[admin]

that is a mouth-full for sure :you are looser:

 

[Ainmosni]

No. It's an elaborate way of saying omnivore. They are saying their brother eats everything.

lacto = dairy
ovo = eggs
pesco = fish
pollo = poultry
carne = all other types of meat

 

[i'mnota]

No..

And I guess I missed the joked.. where's the funny part?